Site selectivity in excited-state intramolecular proton transfer in flavonols
NA Nemkovich, JV Kruchenok, AN Rubinov… - … of Photochemistry and …, 2001 - Elsevier
To investigate 4′-(diethylamino)(FET) and 4′-N-(15-azacrown-5)(FCR) derivatives of 3-
hydroxyflavone in binary solvents and erythrocyte ghosts, we used the red-edge excitation
spectroscopy (REES). The results obtained prove the existence of spectral heterogeneity of
flavonols in the studied systems. The effect manifests itself in the dependence of the
efficiency of excited-state intramolecular proton transfer (ESIPT) on the excitation frequency.
The electro-optical absorption method (EOAM) was used to measure the dipole moments of …
hydroxyflavone in binary solvents and erythrocyte ghosts, we used the red-edge excitation
spectroscopy (REES). The results obtained prove the existence of spectral heterogeneity of
flavonols in the studied systems. The effect manifests itself in the dependence of the
efficiency of excited-state intramolecular proton transfer (ESIPT) on the excitation frequency.
The electro-optical absorption method (EOAM) was used to measure the dipole moments of …
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